Java / SWT vs Tk
When comparing Java / SWT vs Tk, the Slant community recommends Tk for most people. In the question“What are the best cross-platform GUI toolkits?” Tk is ranked 9th while Java / SWT is ranked 30th. The most important reason people chose Tk is:
Once you understand how to style, the styling can look great.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Open source
Pro Actively developed
Pro Native controls
Pro Easy styling
Once you understand how to style, the styling can look great.
Pro Great for beginners
Easy to pick up and run with it.
Pro Easy and good looking in Mac, Linux and Windows
Pro Bindings for several languages
Bindings for Python, C, C++, Ruby, Perl, Go, Java, Haskell and more, see Languages with a Tk binding.
Cons
Con Only works in Java or JRE based software
Con Inherits limitation of native controls
E.g. slow handling of tables with a lot of rows on Linux.
Con No elegant abstraction
As in Swing; no models.
Con Needs separate libraries for each platform
Con Base looks are garbage without a good amount of styling
Going with the base look for your app is a bad idea because it looks like garbage with the defaults.
Con C# support lacking
Although the Eagle Project exists, which offers Mono and .NET Core support, C# support is not standard.